Runtime tools : Client engine : Universal Application Guideline and Samples : Sample Applications : UDTTReactProject
  
UDTTReactProject
About
Browser (React based) App with PWA support
The core App shared (UI, client flow, native sensor) by others
A responsive Web App
Access to device camera, microphone and geographic location (GPS) sensors from Web API
Find the samples at
<UDTT_root>/BTTSample/ClientEngineExample/UDTTReactProject
More details
Using the client engine service in a React project